Mitsubishi Electric NZ2GF2B-60TCTT4 User Manual page 290

(8) Default value write completion flag (RX16)
Turning on Default setting registration instruction (RY16) starts the writing of the default value of the temperature
control module to the remote buffer memory area. After the data writing is completed, this signal turns on. Turning
off Default setting registration instruction (RY16) also turns off the signal.
(9) Back-up of the set value fail flag (RX17)
Turning on Set value backup instruction (RY15) starts the writing of the remote buffer memory data to the non-
volatile memory. This signal turns on when the writing failed.
Set value backup
instruction (RY15)
Back-up of the set value
completion flag (RX15)
Back-up of the set value
fail flag (RX17)
The signal turns off when Set value backup instruction (RY15) is turned on again and the data writing to the non-
volatile memory is normally completed.
For details on the data writing to the non-volatile memory, refer to the following.
Page 136, Section 8.1.7
When the error of the read data is detected at the power-on, Back-up of the set value fail flag (RX17) turns on and the
temperature control module operates with the default value. In that case, turn on Set value backup instruction (RY15) and
write the data to the non-volatile memory. When the writing fails, the possible cause is a hardware failure. Please consult
your local Mitsubishi representative.
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Default setting registration
OFF
instruction (RY16)
Remote buffer memory
OFF
Default value write
completion flag (RX16)
ON
OFF
OFF
OFF
During data write
to a memory
Controlled by the program
Controlled by the temperature control module
Common
ON
User setting
value
ON
Controlled by the program
Controlled by the temperature control module
Common
ON
During data write
to a memory
ON
Error detection of data write to a memory
Default value
During default setting
registration